title: Time series--issues in sampling.
authors.affiliation: Department of Physiological Nursing, University of Washington, Seattle 98195.
authors.forename: M J
authors.initials: MJ
authors.lastname: Lentz
mesh_terms: D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015399:Nursing Research; D012107:Research Design; D013997:Time Factors